Automatic syringe filler



W. 1. DALY.

AUTOMATIC SYRINGE FILLER.

APPLICATION FILED IIIAII. s. 1920.

1,408,272. Patented Feb. 2s, 1922.

UNITED vsTAiiiS Pa'riiN'iv OFFICE.

WEBSTER J. DALY, o'ii Los ANGELES, CALIFORNIA.

AUTOMATIC SYRINGE riLLEii.

To @ZZ 'whom t may concern:

Be it known that I, Tiis'riiii J. DALY, citizen of the United States, residing Vat Los Angeles, in the county of Los Angeles and State of California, have invented certainnew and useful Improvements in Automatic Syringe Fillers; and I do hereby de-l cla-re the following to be a full, clear, and exact description-of the invention, such as willv enable others skilled in the art to which it appei'tains to make and use the same.

VThis invention relates to the transfer of liquid from a reservoir to a syringe or the like. It comprises a liquid trapping reservoir having a filling. well controlled by a valve seated by pressure from within the reservoir but adaptedtobe unseated by pres,- sure from without. illustrated and described "the valve is pro vided with a tubular valvestem extending to the exterior of the reservoirthrough which the liquidis dispensed and charged into a syringe. i

The yobject of the invention is to facilitate the charging of syringes roina storage con-V tainer without waste of liquid or substantial exposure of the Vliquid tothe atmosphere. The particular use vcontemplated is the charging of syringes with medicinal fluids. The accompanying description and drawings ldisclose the invention in the best embodiment at this time known to me.

lIn the drawings:

tion;

Figure 2 is a vertical section in the yline 22 of'Figure V1;

Figure 3 isa vertical section on the line 3-3 of Figure 1, with the valve seated;

Figure 4 is a view of the same section as Fi ure 3 but with the valve unseated.

ike reference characters designate corresponding parts throughout the several views.

In the embodiment shown the body of the reservoir has a semi-cylindrical front face 1 and a flat rear surface 2 designed to rest against an upright wall. Laterally projecting ears 3 are perforated at 4 through which screws or other suitable fasteners may be inserted to sustain the reservoir on a wall.

In the lower portion of the body is a chamber 5 closed at the bottom by a threaded closure 6, the joint being made iluid tight by a gasket 7 fitted between the ange 8 of the closure and the bottom of the body of In the embodiment Figure 1 is a top plan view of the inven' Specification of Letters Patent. Patented FGIL 2:8, `App1ication filed March 3, 1920. Serial No. 362,955. i i i the reservoir. sion 9 in'its inner surface adapted to form a seat for the spring 22.

An orifice or channel 10 extends from `the chamber 5 through the upper'wall of the'` body. vA port 11 connects the lower part of the chamber 5 with the vertical inlet conduit 12, which terminates in a nipple or tubular connector 13 projecting abovefthe top of the reservoir body. i

The channel or orice 10 is controlled by a valve yheld to its 'seat by pressure from within the reservoir. i 141s mounted so as to have a limited vertical movement in the port or channell()r and its piston-tight therein. A flange 15. limitsl the downward movement Vof the hollow stem 14. The lower end of stem 14 is closedor formed with a partition or bottomweb 16 having a threaded central orifice 17. i Just above the bottom 16 18 in the side wall of the tubular stem 14; A flange or disc 19 of metal or other hard material is secured to thermember 14 b a screw 20 engaging the threaded hole 17. Clamped firmly between the disc 19 and the lower end of the member washer 21 of any` spring 22 seated in the depression 9y of clo The closurerG has a depres-A i i A hollow valvev stem A are a number of ports; yV 8() 14 is a packing suitable material such as leather, fibre, rubber or thelike.' A coil' sure 6 exerts pressure against ythe disc to" urge the valve toits closed position. Then the gasket orwasher 21 bears against 4the upper wall of chamber 5 as illustratedin Figures 2 andj3 no liquid can pass through the ports 18. f When the valve `is'depressedl as illustrated in Figure 4 lliquid may pass through port-s 18 and upward through the tubular member 14 which lines the chan' nel 10. y

Hydrostatic ypressure may be maintained in the conduit 12 through any suitable connection with a vessel containing a supply of the desired liquid at a suitable elevation. The nipple 13 provides a convenient means of connection for a supply tube or other means for conducting liquid into the reservoir 5.

In Figures 3 and 4 the nozzle of a syringe S is delineated by a broken line. The upper end of the tubular member 14 is circular and the syringe tip illustrated is conoidal and of yieldable material, thus fitting snugly and fluid tight in the end of the member 14. Pressing downward the syringe tip opens the ports 18, and liquid, such as a practitioners.

medicinal solution, flows through the ports 18 and fills the hollow member 14. The eX- pa-nsible fluid receiving chamber of' the syringe should at this time be contracted. If now the chamber be expanded a charge will be drawn into the syringe. Nhen the syringe tip islifted from the member 14, the valve immediately closes and confines the medicated or other liquid so that none escapes. i f

The' invention is particularly useful in hospitals and for medicinal and surgical The supply' of medicated liquid maybe kept free from contamination, and a syringe may be lled quickly without waste of the medicament.` 'Y

In case the syringe to befilled has a' hard unyielding tip, itmight be founddesirable to make the edge of the .upperend of the hollow valve stem `of, yieldingymaterial as by securing a gaskety thereto as indicated at 23.

` Thehollow stem le, it will be seen, constitutes a filling well adapted to receive the liquid yto be taken up `by the syringe when the'valve is depressed. y

"Thefclosure G is ofi a size to radmit the valvefand spring tofbe readily assembled in the process of manufacture of .the device.

lHaving` described lmy invention in the em-V bodiment best known to me what I claim and desire tosecure by Letters Patent is as follows: m. Y

Q1. A syringe filling deviceconsisting of4 a body having a reservoir therein, a well` extending from the reservoir Vthrough the top'pof said body, saidwell being of a size to receive the nozzle of a syringe within it,

Y and a vertical liquidvfecd conduitin the body having its lowerfend communicating with said reservoir ;Av and ayalvejdisposed sons to close communicationbetween the reservoir and the well in response to pres-` sure; exerted upward. Afrom the well, said Vvalve permitting liquid` to flow lfro'mthe v reservoir into the well when it is depressed` 2. In a syringe filling device, a body having a reservoir, an orifice extending from the reservoir to the top of the body, a valve comprising a tubular stem fitting said orilice and a flange at the lower end of said stem adapted to seat fluid-tight under upward pressure, said stem having a lateral port therethrough adjacent to and above the flange, said stem having one end projecting normally above the topwall of the reservoir and al stop flange on'the top of said stem to limit the downward movement of' said valve by contact with the top -of said body. r

3. In a syringefilling device, afbody having a reservoir, an orificeextending from the reservoir to the top of the body; a valve comprising a tubular stemffitting said orifice and a flange at the lower end ofl said stem adapted to seat fluid-tight under upward pressure, said stem having a lateral port therethrough adjacent to and above the flange and being imperforate above said port, and anl internal packingy gasket at the upper end of said stem `projecting slightly inward so as to make a fluid-,tight joint between it andv the nozzle inserted into said Stem. j

Lf.' A syringe filling devicecomprising 'a substantially semicylindrical body A having i `a flat rear wall with projecting-'flanges adapted to be secured against a vertical wall,

said bodyhaving a syringe-'filling `wellin its top wall and a reservoir adaptedto be placed*incommunication therewith, a valve normally closing the ports between the well and saidyreservor, said valve adapted-.to be opened bydownivard Vpressure thereon,

a vertical conduit in saidbodybetween'the filling well land the flat wall, said-conduit being in communication -with the lowerlp'art'` of said reservoir and adapted tobe vconnected with a source of hydrostatic pressure. f

In testimony whereof I affix my signature.;

` WEBSTER J.,JDALY. 

